code: def test_hash_redis_storage_none_config(self):
      conf = self.redis_storage.load_hash_configuration(
          "nonexistentHash"
      )
  
      self.assertIsNone(conf)
  
file_path: NearPy/tests/hash_storage_tests.py
imports: import numpy
  import unittest
  from mockredis import MockRedis
  from nearpy.storage import MemoryStorage, RedisStorage
  from nearpy.hashes import RandomBinaryProjections, RandomDiscretizedProjections, PCABinaryProjections, PCADiscretizedProjections
label_desc: Use image node_id 7 for calling the TestHashStorage obj's underlying member method code with example usage: obj.test_hash_redis_storage_none_config() without return types